Cosmetic composition

Abstract

The invention pertains to a cosmetic composition comprising: at least one saponin; and at least one prebiotic component selected from the group consisting of fructooligosaccharides, fructans, galactooligosaccharides, galactans, glucooligosaccharides, glucans, pectin, xylooligosaccharides, xylans, and mixtures thereof. The invention also pertains to a process for producing such a cosmetic composition and to a use of said cosmetic composition.

1 .- 17 . (canceled) 
     
     
         18 . A cosmetic composition comprising:
 at least one saponin; and   at least one prebiotic component selected from the group consisting of fructo-oligosaccharides, fructans, galactooligosaccharides, galactans, gluco-oligosaccharides, glucans, pectin, xylooligosaccharides, xylans, and mixtures thereof,   wherein said at least one saponin is obtained from a plant source,   wherein said plant source is tea (including  Camellia sinensis  and  Camellia oleifeira ), species from the  Sapindus  Genus (including  Sapindus delavayi, Sapindus oahuensis, Sapindus mukorossi, Sapindus marginatus, Sapindus saponaria, Sapindus trifoliatus, Saponaria officinalis ),  Quillaja saponaria , species of the Genus  Yucca  (including  Yucca schidigera ) or  quinoa.      
     
     
         19 . The cosmetic composition according to  claim 18 , wherein said at least one prebiotic component comprises an inulin-type polymer. 
     
     
         20 . The cosmetic composition according to  claim 18 , wherein said at least one prebiotic component is present in the composition in a concentration of at least 0.01 wt % to at most 8 wt %, by weight relative to the total weight of the composition. 
     
     
         21 . The cosmetic composition according to  claim 18 , wherein said at least one saponin is present in the composition in a concentration of at least 0.001 wt % to at most 15 wt %, by weight relative to the total weight of the composition. 
     
     
         22 . The cosmetic composition according to  claim 18 , wherein said composition further comprises at least one of the following:
 an anionic surfactant, a cationic surfactant, an amphoteric surfactant, and a non-ionic surfactant,   wherein said non-ionic surfactant is exclusive of a saponin.   
     
     
         23 . The cosmetic composition according to  claim 18 , further comprising at least one oil selected from jojoba oil, isoamyl laurate, and cyclopentasiloxane; said at least one oil being comprised in a hydrophobic phase of a stable emulsion. 
     
     
         24 . The cosmetic composition according to  claim 18 , further comprising at least one emulsion breaking agent selected from the following:
 an antimicrobial agent, such as a medium-chain length linear vicinal diol, glyceryl caprylate, or caprylyl glycol;   an electrolyte, such as MgSO4 or NaCl;   a cationic molecule, such as cationic surfactants such as cetrimonium chloride;   an oxidising agent, such as hydrogen peroxide in a concentration between 10 and 30% (v/v);   a sunless tanning agent, such as dihydroxy acetone (DHA);   a reducing agent, such as potassium thioglycolate;   an alpha hydroxy acid, such as glycolic acid;   an alpha and beta hydroxy acid, such as salicylic acid;   a surfactant, such as cocamidopropyl betaine, sodium cocoyl glutamate, or sodium lauroyl glutamate;   a C1-C7 alcohol, such as ethanol.   
     
     
         25 . The cosmetic composition according to  claim 18 , wherein said composition is a leave-on cosmetic product or is part of a leave-on cosmetic product,
 wherein said at least one prebiotic component is present in the cosmetic product in a concentration of at least 0.01 wt % to at most 8 wt %, by weight relative to the total weight of the cosmetic product.   
     
     
         26 . The cosmetic composition according to  claim 25 , wherein said at least one saponin is present in the cosmetic product in a concentration of at least 0.001 wt % to at most 5 wt % by weight relative to the total weight of the cosmetic product. 
     
     
         27 . The cosmetic composition according to  claim 25 , wherein the weight ratio of said at least one saponin to the total of all surfactants in the composition, excluding said at least one saponin, is at least 1:100 and at most 100:1. 
     
     
         28 . The cosmetic composition according to  claim 18 , wherein said composition is a rinse-off cosmetic product or is part of a rinse-off cosmetic product,
 wherein said at least one prebiotic component is present in the cosmetic product in a proportion of at least 0.01 wt % to at most 8 wt %, by weight relative to the total weight of the cosmetic product.   
     
     
         29 . The cosmetic composition according to  claim 28 , wherein said at least one saponin is present in the cosmetic product in a concentration of at least 0.1 wt % to at most 15 wt % by weight relative to the total weight of the cosmetic product. 
     
     
         30 . The cosmetic composition according to  claim 28 , wherein the weight ratio of said at least one saponin to the total of all surfactants in the composition, excluding said at least one saponin, is at least 1:100 and at most 100:1. 
     
     
         31 . A process for preparing a cosmetic composition according to  claim 18 , the process comprising:
 extracting at least one saponin from its source using a mixture of water and a water-soluble alcohol; and   combining said at least one saponin with at least one prebiotic component selected from the group consisting of fructooligosaccharides, fructans, galactooligosaccharides, galactans, glucooligosaccharides, glucans, pectin, xylooligosaccharides, xylans, and mixtures thereof.   
     
     
         32 . The process according to  claim 31 , wherein said extraction is performed by use of a mixture of ethanol and water,
 wherein the ethanol:water ratio is between 60:40 and 80:20.   
     
     
         33 . Use of the cosmetic composition according to  claim 18  in the preparation of a rinse-off cosmetic product or a leave-on cosmetic product. 
     
     
         34 . A medicinal composition for the treatment of acne vulgaris, the medical composition comprising:
 at least one saponin; and   at least one prebiotic component selected from the group consisting of fructo-oligosaccharides, fructans, galactooligosaccharides, galactans, gluco-oligosaccharides, glucans, pectin, xylooligosaccharides, xylans, and mixtures thereof,   wherein said at least one saponin is obtained from a plant source,   wherein said plant source is tea (including  Camellia sinensis  and  Camellia oleifeira ), species from the  Sapindus  Genus (including  Sapindus delavayi, Sapindus oahuensis, Sapindus mukorossi, Sapindus marginatus, Sapindus saponaria, Sapindus trifoliatus, Saponaria officinalis ),  Quillaja saponaria , species of the Genus  Yucca  (including  Yucca schidigera ) or  quinoa.